Abstract:
The problem statement of this study is long-term use of electronic devices causes vision problems, such as dry
eyes, tired eyes, increased myopia, etc during COVID-19. Dry eye is the most obvious symptom, but it also
includes symptoms related to vision correction or binocular visual pressure, as well as complaints about the
precorneal tear film (Branzila, 2020). The objective of this project is to design a distance circuit system by using
the ultrasonic sensor for a vision care detector, to design a timer circuit for managing the time duration in using
electronic gadgets as prevention to sore eyes, and analyze the usability of eye strain user in distance and time
duration of using electronic gadgets. The Arduino microcontroller is used to monitor the user's sitting distance
from the screen and to manage the user's time spent on electronic gadgets. Through the interface of hardware
and software, which are the Arduino system and the Blynk app, the user of an electronic gadget will be able to
monitor their usage period of the electronic gadgets. Based on the research findings in journals and articles, it
proved that the ideals of sitting distance or body between screens will be 0.50m to 0.73m. Consideration of eyecomputer
screen distance while using computers is also a measuring parameter in this project and then to
analyze the suitable range of distance for the computer users, there is some more research needed for this
parameter to ensure the expected result. Extensive studies have been carried out in order to identify the blink
rate, the average spontaneous blink rate is between 12 and 15 blinks per minute. This system is composed of
sensors such as an ultrasonic distance sensor, an Arduino Uno R3, and software programming that can
automatically collect data and analyze it to ensure that the parameters of the users are within the expected
range. This system will also link to the Blynk smartphone application to assist people suffering from eye strain
symptoms.
